Hi there
I had been writing with a user on Reddit who said that he last saw LOL Superman back in 2013 in a KIK group. This user is legit, as he first posted about this experience in the morbidquestions subreddit, without even knowing how that video is supposedly called and that it’s been searched for. I explained that to him, showed him the Davinci recreation, and he immediately recognized it.
Nevertheless, he told me that it was of very low, grainy quality and that it had two watermarks: One static in Latin script, one floating (kind of like the Kaotic or Hoodsite watermark) in Cyrylic script.
Do you know of any (Russian?) gore websites which had such kind of floating watermark? This could really help narrow down the search further.